Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.2 Acting on the aldehyde or oxo group of donors
1.2.1 With NAD+ or NADP+ as acceptor
1.2.1.25
R03171 (S)-3-Methyl-2-oxopentanoic acid + CoA + NAD+ <=> (S)-2-Methylbutanoyl-CoA + CO2 + NADH + H+